||The topic of this article may not meet Wikipedia's notability guidelines for products and services. (April 2013)|
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|Initial release||25 March 2003|
|Stable release||R5.1.0 / June 17, 2012|
|Preview release||R5.0.rc3 / March 20, 2012|
WackoWiki is a lightweight, expandable, multilingual wiki engine based on WakkaWiki. The software is written in PHP, and uses MySQL to store pages. WackoWiki has an advanced editor with support for multiple languages, easy installer, many localizations, email notification on changes/comments, several cache levels, design themes (skins) support, XHTML compliance, page rights (ACLs), and page comments. WackoWiki is licensed under BSD.
WackoWiki is developed mainly by Russian programmers, but it is not a Russian-only engine. At the moment it supports Bulgarian, Danish, Dutch, English, Estonian, French, German, Greek, Italian, Spanish, Polish, Portuguese, and Russian languages. WackoWiki was forked from the WakkaWiki engine in 2003 when Hendrik Mans and Carlo Zottmann, the original developers, abandoned it.
WackoWiki is widely used in Russia as a wiki-engine, and by many IT companies as a lightweight CMS and a knowledge management system. It shares several modules, developers, and a bugtracker with the NPJ engine.
The latest version is R5.1.0, released on 17 June 2012.
 Wacko features
- All features from WakkaWiki, including installer & upgrader:
- Designed for speed and extensibility
- Quick and easy installation
- Integrated user management
- Access control through per-page access control lists
- Integrated page-commenting functionality
- Full revision control
- Easily customizable
- Supports multiple sites running off the same Wakka installation
- Clusters (subpages) & relative addressing
- Page watching & email notification on changes/comments (simple diff included in email)
- Supports entering text in multiple-languages / alphabets (subject to browser limitations)
- Enhanced What You Think Is What You Get editing — table markup, Open Wiki-compatible markup
- Links can be Camel Case or Free Links
- Powerful diff between revisions
- Several levels of caching (backlinks, pages) bring significant performance gain compared to Wakka
- Automatic Table Of Contents generation
- On-the-fly correction of punctuation typos & special characters
- Design themes (skins) support.
 See also